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Employees' Profit Sharing Plan (Details) - Deferred Profit Sharing [Member] - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Employees' profit sharing plan      
Minimum period of continuous employment to be fully vested 1 year    
Profit sharing costs $ 4,300 $ 3,550 $ 4,000